phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('abd4d5bf2db4e82ce52772194b96e5d1', -1, 1714077395, 1714077395, '038bed82', 6, 0, 0)

Line : 187
File : sessions.php